Should have been more precise. I meant the traffic at my waypoints. That was way higher.
And you don't nee CRCR for UAs. Just be fast on jumping (high-class scoop needed) and you avoid the damage. And have AFMUs for the meantimes. People have taken them to Sag A without CRCRs.
Yes ... you'd still need to get in-system without your ship falling apart, though, and 1500Ls of supercruise will get you a few nasty hits if you're carrying even 20 in an unshielded bay. Plus you can't combine that "always jump fast" with neutron boosting, so it might nowadays be quicker to carry a smaller amount fully shielded.
With the Dove Enigma expedition itself using those waypoints as its own waypoints as well, I would look to that rather than a hypothetical large group of UA bombers as a reason for noticeably increased traffic - there's a few hundred of them, according to EDSM, around those waypoints.
Question for the experts, I was under the impression UA's wreck a ship unless fitted with 2 tonne corrosive racks. That means 18 tonnes maximum on a Cutter, how does someone haul enough of those MA's to cause a ship 26,000Lys away to potentially shut down?
Make lots of trips, basically. Round trip to Colonia and back with neutron-boosting is only 6 hours or so in a stripped-down ship (20 tonnes on an Anaconda with CRCRs, potentially) and it's been 3 weeks since the ship arrived, so that's long enough for one extremely persistent person (or a few slightly less persistent ones) to take enough.
We had earlier UA damage - which has been fixed in this week's update, by some unknown MA haulers - to The Pit, only a few LY from Colonia. It's a lot of effort, but it's not completely impractical to do if someone has the patience.